US4054742A - Printed circuit boards - Google Patents

Printed circuit boards Download PDF

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Publication number
US4054742A
US4054742A US05/671,165 US67116576A US4054742A US 4054742 A US4054742 A US 4054742A US 67116576 A US67116576 A US 67116576A US 4054742 A US4054742 A US 4054742A
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US
United States
Prior art keywords
board
tracks
conducting
cavity
contact members
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US05/671,165
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English (en)
Inventor
Francois Robert Bonhomme
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US4054742A publication Critical patent/US4054742A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/72—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures
    • H01R12/721—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures cooperating directly with the edge of the rigid printed circuits
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/11—Printed elements for providing electric connections to or between printed circuits
    • H05K1/117—Pads along the edge of rigid circuit boards, e.g. for pluggable connectors
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/09—Shape and layout
    • H05K2201/09009—Substrate related
    • H05K2201/09036—Recesses or grooves in insulating substrate
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/09—Shape and layout
    • H05K2201/09209—Shape and layout details of conductors
    • H05K2201/09372—Pads and lands
    • H05K2201/09472—Recessed pad for surface mounting; Recessed electrode of component
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
    • H05K2203/16—Inspection; Monitoring; Aligning
    • H05K2203/167—Using mechanical means for positioning, alignment or registration, e.g. using rod-in-hole alignment

Definitions

  • This invention relates to printed circuit boards.
  • the invention relates to printed circuit boards comprising, adjacent at least one of their edges and on at least one of their faces, conducting tracks adapted to co-operate with resilient contact members of a connector for receiving the boards, the contact members being orientated in use parallel to the tracks.
  • These conducting tracks may be carried either directly by the board, that is to say by a flat insulating rigid support, which may or may not be rectangular and which is generally made of laminated plastics material, or by "male connectors", that is to say by relatively flat rigid elements which are mounted at the edges of the board proper, with or without freedom of movement in a direction parallel to these edges.
  • Such a freedom of movement enables the conducting tracks of the male connectors to be centered with respect to the resilient contact members; the male connectors can be dismounted and replaced when their conducting tracks are worn, while the actual printed circuit boards, which are expensive, remain usable for a long period.
  • each contact member can generally only touch the conducting track at a single point. The passage of current between the contact members and the tracks is therefore not ensured in a satisfactory and reliable manner.
  • a printed circuit board comprising, adjacent at least one of its edges and on at least one of its faces, conducting tracks adapted to cooperate with resilient contact members of a connector for receiving the board, the contact members being orientated in use in alignment with the tracks, in which at least one of the conducting tracks has a concave cross section and is formed by a cavity in a rigid insulating support forming part of the board or in a male conductor associated with the board, the surface of the cavity having a coating of conducting material.
  • such a board has the advantage of centering the resilient contact member in relation to the conducting track.
  • FIG. 1 is a fragmentary sectional view of a printed circuit board according to the invention, engaged in a connector provided with resilient contact members,
  • FIG. 2 is a perspective view, on a larger scale, with parts cut away, of an edge portion of the printed circuit board of FIG. 1, and
  • FIG. 3 is a view, on a still larger scale and taken in the direction of the arrow III of FIG. 2, of a conducting track of the printed circuit board with the associated resilient contact member shown in cross section.
  • FIG. 1 shows, by way of example, a printed circuit board 1 which is engaged in a connector according to my co-pending patent application U.S. Serial No. 665,864 filed March 11, 1976, entitled “ELECTRICAL CONNECTION DEVICES.”
  • Such a connector comprises a series of contact members 2 which are grouped in pairs, one of these pairs being visible in FIG. 1.
  • Each contact member 2 is formed by a round metal wire and has a rectilinear portion 2a which passes through a U-shaped insulating case 3 and a connecting board 4, called a "mother board".
  • the case 3 has mortises 5 in which are engaged dovetail tenons belonging to two slides 6.
  • two sliding strips 7, which can be displaced jointly perpendicular to the plane of FIG. 1, it is possible to cause the slides 6 to pass from the closed position illustrated in the upper part of FIG. 1 to the open position represented in the lower half of the Figure, and vice versa.
  • each contact member 2 has an active region 2d which, according to the position of its slide 6, is applied resiliently against the opposite conducting track 8 of the board 1 (upper part of FIG. 1) or is retracted from the volume swept by the board during its introduction or its extraction (lower part of FIG. 1).
  • At least one of the conducting tracks 8 has a concave cross section, clearly visible in FIGS. 2 and 3.
  • cavities 9 having a V-shaped section, are machined in the insulating support of the board. As FIG. 2 shows, these cavities 9 have a relatively great length to tolerate a certain inaccuracy in the position (in the direction of this length) of the active region 2d of the contact members 2.
  • the conducting tracks 8 or cavities 9 stop before the edge of the board 1; in an alternative embodiment illustrated in chain line in FIG. 1 and by the right hand track in FIG.
  • the conducting tracks 8 or cavities 9 continue, with a constant section, as far as the edge of the board.
  • the depth of the cavities 9 depends on the thickness of the board 1 and on the diameter of the single wire or of the group of elemental wires (twisted or parallel) forming the contact members 2.
  • the angle A of the V-section should be such that it enables the active region 2d of the member 2 to be centered in the bottom of the V solely by the pressure of the member 2 against the board 1.
  • each V should be sufficiently great in relation to the diameter of the members 2 to enable the member 2 to be accommodated in the center of the V, as a result of its pressing against the board 1, that is to say to ensure the contact between the member 2 and track 8 at two points or lines, despite spacing between the active region 2d of the contact member 2 with respect to the plane of symmetry of the V cavity.
  • the surfaces of the cavities 9 are metallized to form conducting layers 10 which, outside the region which may be touched by the contact member 2, may be extended by flat conducting elements 11.
  • the invention enables the contact member 2 to touch the conducting track 8 tangentially at two points M and N (instead of generally at a single point hitherto), or at two lines passing through these two points.
  • a spacing of the order of only 0.6 mm can be provided between adjacent tracks 8, which enables a greater number of tracks 8 to be placed on a standard board 1 than hitherto.
  • the invention is not limited to the embodiments illustrated by the accompanying drawings, and that many modifications will be apparent to those skilled in the art.
  • the printed circuit boards according to the invention may be used with any connector adapted to receive such boards and the invention is therefore not limited to the case where this connector is of the type described in the above-mentioned co-pending patent application.
  • the contact members 2 are not necessarily round but may, in particular, be of square or rectangular section.
  • the concave cross section of the conducting tracks is not necessarily V-shaped but may, for example, have a flat bottom, and oblique, straight, or curved sides, provided that these sides are orientated in such a manner as to restore towards the plane of symmetry of the conducting track any conductor which appears with a certain lateral offsetting.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Printing Elements For Providing Electric Connections Between Printed Circuits (AREA)
US05/671,165 1975-04-11 1976-03-29 Printed circuit boards Expired - Lifetime US4054742A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR75.11314 1975-04-11
FR7511314A FR2307436A1 (fr) 1975-04-11 1975-04-11 Perfectionnements aux cartes a circuits imprimes

Publications (1)

Publication Number Publication Date
US4054742A true US4054742A (en) 1977-10-18

Family

ID=9153796

Family Applications (1)

Application Number Title Priority Date Filing Date
US05/671,165 Expired - Lifetime US4054742A (en) 1975-04-11 1976-03-29 Printed circuit boards

Country Status (7)

Country Link
US (1) US4054742A (enrdf_load_stackoverflow)
JP (1) JPS51125872A (enrdf_load_stackoverflow)
DE (1) DE2615300C2 (enrdf_load_stackoverflow)
FR (1) FR2307436A1 (enrdf_load_stackoverflow)
GB (1) GB1505207A (enrdf_load_stackoverflow)
IT (1) IT1062706B (enrdf_load_stackoverflow)
NL (1) NL7603363A (enrdf_load_stackoverflow)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4159861A (en) * 1977-12-30 1979-07-03 International Telephone And Telegraph Corporation Zero insertion force connector
US4517625A (en) * 1983-11-09 1985-05-14 Lockheed Corporation Circuit board housing with zero insertion force connector
US4638406A (en) * 1984-10-04 1987-01-20 Motorola, Inc. Discrete component mounting assembly
US4736275A (en) * 1987-02-09 1988-04-05 Augat Inc. Circuit board contact guide pattern
US4834660A (en) * 1987-06-03 1989-05-30 Harris Corporation Flexible zero insertion force interconnector between circuit boards
US4874323A (en) * 1987-11-11 1989-10-17 Brother Kogyo Kabushiki Kaisha Connector
US20060189195A1 (en) * 2005-02-23 2006-08-24 Nec Corporation Connector device
US20070167048A1 (en) * 2004-02-19 2007-07-19 Achim Puettner Direct plug-in connection including a cable end sleeve
KR20190083569A (ko) * 2018-01-04 2019-07-12 삼성전자주식회사 메모리 카드 및 이를 포함하는 전자 장치

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5656174U (enrdf_load_stackoverflow) 1979-10-04 1981-05-15
DE3501711A1 (de) * 1985-01-19 1986-10-02 Allied Corp., Morristown, N.J. Leiterplatte mit integralem steckverbinder
US4734045A (en) * 1987-03-27 1988-03-29 Masterite Industries, Inc. High density connector
DE59007485D1 (de) * 1989-07-17 1994-11-24 Siemens Ag Ultraschall-Schichtwandler.
US5620342A (en) * 1995-06-12 1997-04-15 The Whitaker Corporation Socket having low insertion force contact system
JP4910895B2 (ja) * 2007-06-13 2012-04-04 株式会社デンソー カードエッジコネクタの接続構造
DE102017105186B4 (de) 2017-03-10 2019-05-23 Amphenol-Tuchel Electronics Gmbh Rundsteckverbinderbuchse für eine daran anordenbare Leiterplatte

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3138675A (en) * 1961-06-07 1964-06-23 Krone Gmbh Separating and testing plug contact, particularly for separating soldering tag strips in telecommunication technique
US3278714A (en) * 1963-11-14 1966-10-11 Int Standard Electric Corp Supporting frame for printed circuit board

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1415430A (fr) * 1963-12-05 1965-10-22 Amp Inc Ensemble de connecteur pour bord de panneau de circuit imprimé
GB1180027A (en) * 1966-06-22 1970-02-04 Lucas Industries Ltd Connectors for Use in with Flexible Printed Circuits.
GB1203756A (en) * 1966-12-06 1970-09-03 Belling & Lee Ltd Improvements in or relating to electrical connectors
FR2191400B1 (enrdf_load_stackoverflow) * 1972-06-30 1975-03-07 Socapex

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3138675A (en) * 1961-06-07 1964-06-23 Krone Gmbh Separating and testing plug contact, particularly for separating soldering tag strips in telecommunication technique
US3278714A (en) * 1963-11-14 1966-10-11 Int Standard Electric Corp Supporting frame for printed circuit board

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4159861A (en) * 1977-12-30 1979-07-03 International Telephone And Telegraph Corporation Zero insertion force connector
US4517625A (en) * 1983-11-09 1985-05-14 Lockheed Corporation Circuit board housing with zero insertion force connector
US4638406A (en) * 1984-10-04 1987-01-20 Motorola, Inc. Discrete component mounting assembly
US4736275A (en) * 1987-02-09 1988-04-05 Augat Inc. Circuit board contact guide pattern
US4834660A (en) * 1987-06-03 1989-05-30 Harris Corporation Flexible zero insertion force interconnector between circuit boards
US4874323A (en) * 1987-11-11 1989-10-17 Brother Kogyo Kabushiki Kaisha Connector
CN100555757C (zh) * 2004-02-19 2009-10-28 罗伯特·博世有限公司 电缆终端套管的直接插塞连接装置
US20070167048A1 (en) * 2004-02-19 2007-07-19 Achim Puettner Direct plug-in connection including a cable end sleeve
US8342868B2 (en) 2004-02-19 2013-01-01 Robert Bosch Gmbh Direct plug-in connection including a cable end sleeve
US7255586B2 (en) * 2005-02-23 2007-08-14 Nec Corporation Connector device
US20060189195A1 (en) * 2005-02-23 2006-08-24 Nec Corporation Connector device
KR20190083569A (ko) * 2018-01-04 2019-07-12 삼성전자주식회사 메모리 카드 및 이를 포함하는 전자 장치
CN110009083A (zh) * 2018-01-04 2019-07-12 三星电子株式会社 存储卡和包括该存储卡的电子设备
US10903592B2 (en) * 2018-01-04 2021-01-26 Samsung Electronics Co., Ltd. Memory card and electronic apparatus including the same

Also Published As

Publication number Publication date
DE2615300C2 (de) 1984-05-10
NL7603363A (nl) 1976-10-13
DE2615300A1 (de) 1976-10-21
IT1062706B (it) 1984-10-31
FR2307436A1 (fr) 1976-11-05
FR2307436B1 (enrdf_load_stackoverflow) 1979-08-03
GB1505207A (en) 1978-03-30
JPS51125872A (en) 1976-11-02

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